/Engine/Source/Runtime/OpenGLDrv/Public/OpenGLES.h
static void CopyImageSubData ( GLuint SrcName, GLenum SrcTarget, GLint SrcLevel, GLint SrcX, GLint SrcY, GLint SrcZ, GLuint DstName, GLenum DstTarget, GLint DstLevel, GLint DstX, GLint DstY, GLint DstZ, GLsizei Width, GLsizei Height, GLsizei Depth )